Means for loading and unloading trucks.



C. MAITSN.

MEANS FOR LOADING AND UNLOADNG TRUCKS.

APELIGA'HON FILED 001:5, 1911.

jgbgggyg@ Patented May 7, 19l2.

2 SHEETS-SHEET lY c. MATTSON. MEANS FOR LOADING AND UNLOADING TRUCKS.

APPLICATION FILED 00T.5, 1911.

1,025,287; Patentedmay 7, 1912.

2 SHEETS-SHEET. 2.

cnnnns nimmer', 'or nant-aaron, wnsnrimron@ lpeeiostion of Letters latent.

lmum ma nomme nitnfnitmnnme Tanon.

PateneeaMay 7, i912..

miniem mea october 5, 1911. semina. 653,033.

' of the city of Bremerton, in the county of fio y vente and State of Washington, have incertain new and useful Improvements in Means for Loading and Unloading' Trucks, of which the following is a. specificatio My invention relates to an improvement in means for loading and unloading trucks, and comprises the novel parts and combinations of parts which will be hereinafter described and particularly pointed out in the claims.

The object of my invention is to provide Kitsap means whereby the motor which is used for.

propelling automobile trucks may be used for handling the loads in loading and unloading.

In the accompanying drawings I have shown my invention in the form which is now preferred by me..

Figure 1 is a side elevation of a truck having my invention thereon. Fig. 2 is an end elevation of the same. Fig. 3 is a detail showing the manner of detachably securing the trackway beam to the su porting frame. Fig. 4 shows the manner o removably attaching the supporting frame to the truck platform. Fig. 5 shows a preferred form of friction-driving connection between the hoisting or windin drums and the motor.

My device in ay placed upon any form of automobile trucks and will reatly facilitate the handling of the loa s in placing theml upon or removing them from the truck. It is so designed t, at it may be readily removed from or placed upon the truck as conditions of use may dictate.

For handling the loads I employ an elevated trackway extending lengthwise the truck and roject-ing at the rear beyond the rear end ci) the truck platform, upon which traclrway travels a trolley carriageA operated by ropes from hoisting drums adapted to be operated from the motor by which the truck is driven. The form of elevated trackway which I prefer is that shown in detail in Fig. 3, this consisting of an I- beam 1, the lower flanges of which serve as the track surface for the trolley carriage 2. This trackway is supported by a frame work consisting of posts 3, 3, and braces 30, 30, supported from the margins of the track platform, and transverse beams 31 which 'extend across the platform and connect'the posts of opposite sides of the truck. For convenience in removing and putting in place this supporting frame, I have provided means whereby it may be conveniently secured and disconnected from theplatform The means herein shown for doin` this consists in providing the. platform with lugs or eyes 4 which are adapted toregister with, eyes formed in the lower ends of the posts 3 or braces 30, these latter bein provided with additional eyed ugs 32 and all being secured bypivotbolts 40.

The trackway beam 1 is detachably secured to the transverse beams so-that it may be quicklyv put in fplace andtaken down.

he means shown or this consists in roviding the transverse beams withl a projecting-lugor ear 52 between which-and the lower surface of the transverse beam the upper flange of the trackway beam 1 may be inserted. Iii-connection with and sup 1ementing this is 'a movable clamp or slid; 5 movable lengthwise the transverse beam and having an ear or l 50 adaptedto pass beneath and engage t e under surface ofthe top flange at the other side of the trackway beam 1. This clamp orslide maybe secured in place upon the transverse beaml by a set screw 51, or any other convenient .and suitable means. Byy sliding this clamp back the trackway beam 4may beV put in place' or removed, and by sliding it up-toward the fixed ears 52, the beam may be securely held in place.

The trolley carriage 2 maybe of'any a provedy construction. It contains whedls which travel upon the lower an'ges of the trackway beam 1 and a pulley or. pulleys adapted to receive the load hoisting rope 6. One end of this rope may,` as is shown, be secured to the trolley carriage and then pass about a block and thenceabout the wheelmounted vin the carriage andthence to the hoisting drum. The power of the hoist may be varied by varying the number of pulleys used in the fall block and carriage about which the hoist rope passes. A traversing rope 61 is secured by its ends to the carriage and leys 10and 11 at the ends of the trackway beam to the traversing drum 12, whereby the carriage may be moved along the trackway as desired. The hoist rope passes to preferably passes about guide pul" vThe two drums 12 and 13 are connected bar 75, so as to enga with the motorof the truckso that they may be operated 'therefrom'in either direction as desired. I havelshown this as being done by the following means: The shaft of the drum is provided with. a worm wheel/7, with which gears a worm A70 upon a shaft 71. At their inner ends the shafts 71 are provided withffiiction pulleys 72, adapted to be engaged with either of two friction disks, 8 and 80, which are secured upon a shaft 81, which shaftflnay be the shaft of the truck motor or an extensionthereovor a shaft-'which 'is geared t turn with said motor. The shafts 71 are mounted in bearings 74 adapted to be moved by a connected e the friction pulleys I'Qwithueither ofthe rietion disks 8 and 80. Thesebars-751may be controlled and moved by 'levers-76. j y v Invuse for placing a load upon the truck the trolley carriage is run to the rear until it is beyond the rear, end of the' truck )plato'rm, which may be'done beeauseot the rear projection of the traekway beyond the platform. The truck is placed so that the `load is beneath this rearward extension ot' the traekway, o1" the .load brought to the Corresponding position.A The fall block is then lowered and attached to the load. By applyingthe proper tric-tion device the load n'iaybe raised, and when raised'to the proper heightthe other drum may be operated yto draw the trolley carriage inward so as tov convey thelo'adjto any point over thetrnck platform, wthenvit may be lowered. yIn unloadingthetruck the operation is reversed. ln this way heavy loads may be quickly andfcasily placed upon or removed from the truck, making it' possible to do a great deal more work with the ltruck than ywouldlax possible by other means, and also doing this ywork with more safety and less possil'iility of accident or damage than where this work isdone by hand.

Whenit isfnot necessary or desirable to use-this power loadingdeviee, the supporting 'trame and trackway may be quickly taken-down and removed from the truck, leaving its platform tree and open for the loading and handling of any form of bulky ci" the truck platform, transverse beams supported in elevated position by said posts above they truck platform, an Ifbeam adapted to form a trolley traekway and of a length to project rearwardly beyond the.

platform, releasable clamping devices adapted to secure sald `tackway beam to the transverse beams, a trolley carriage running upon the lower tlanges ot. the -trackway beam, guide pulleys carried by opposite ends of -the traekway beam, hoist and traversing ropes extending over the said guide pulleys to the trolley carriage, windingr mechanisms upon the truck receiving said hoist and traversing ropes, and means for reversely operating said winding mechanislns 'from the truck propelling motor.

i2. 'l`he'eo1'nbination with a truek, of posts rising from `the margins ot the truck plat.- form, beams supported trom the upper ends ot' said posts and extending transversely ot tlie`platto1'ln, a traekway Consisting oi' an I-beam extending lengthwise beneath said transverse beams and projecting beyond the rear vend ot the truck platlrn-m, means tor supporting said traekway beam comprising members secured to the transverse beams and having lugs adapted to project; under 

